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John Macleod
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John Macleod

Nobel prize-winning Scottish physician and physiologist; co-discoverer of insulin

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John James Rickard Macleod, was a Scottish biochemist and physiologist. He devoted his career to diverse topics in physiology and biochemistry, but was chiefly interested in carbohydrate metabolism. He is noted for his role in the discovery and isolation of insulin during his tenure as a lecturer at the University of Toronto, for which he and Frederick Banting received the 1923 Nobel prize in Physiology or Medicine. Awarding the prize to Macleod was controversial at the time, because according to Banting's version of events, Macleod's role in the discovery was negligible. It was not until decades after the events that an independent review acknowledged a far greater role than was attributed to him at first.

Quick facts

Born
wd
Place of birth
Clunie wd
Died
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Place of death
Aberdeen wd
Citizenship
United Kingdom wd
Occupation
physician, inventor, university teacher, physiologist wd
Education
University of Aberdeen, University of Aberdeen School of Medicine wd

Awards wd

  • Fellow of the Royal Society of Edinburgh (1932)
  • Nobel Prize in Physiology or Medicine (1923)
  • Canadian Medical Hall of Fame (2012)
  • Cameron Prize of the University of Edinburgh
  • Fellow of the Royal Society (1923)

Questions

When was John Macleod born?
John Macleod was born on 6 September 1876 in Clunie.
Where did John Macleod study?
John Macleod was educated at University of Aberdeen, University of Aberdeen School of Medicine.

Sources

  1. Wikipedia (English): John Macleod · CC BY-SA 4.0
  2. Wikidata item Q232024 · CC0 1.0
  3. Image: J.J.R. Macleod ca. 1928.png by Unknown author Unknown author (Public domain)

Last updated · facts checked 6 November 2026

Cite this page

"John Macleod". DigiNepal. Last updated 1 November 2026. https://diginpl.com/people/john-macleod. Retrieved 6 November 2026.

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Text from the Wikipedia article John Macleod, licensed under CC BY-SA 4.0. This page's text is shared under the same licence. Facts from Wikidata (CC0). Image: J.J.R. Macleod ca. 1928.png — Unknown author Unknown author, Public domain.

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